They do contain a lot of fat from vegetable oil but they are very low in cholesterol. I will trade more sodium for the advantages for me of reducing cholesterol.
They really taste good. We like them on good rolls, purple onion, tomato, lettuce, and whatever sauce we feel like. Fantastic tasting burgers.
There is also the advantages of not killing animals. My wife and I have just spent two years living in Illinois (returning home to Sedona Arizona next week) and our rented home is beside a pasteur and let me tell you that cows run around like dogs, playing together, and generally have different personalities - we notice which ones tend to start the running around playing/games and which ones join in after the game starts. I think most people in order to make themselves feel better imagine cows and steers as being dumb animals with no soul or consciousness. Not so. I am not a strict vegetarian, but personally I feel better about reducing my meat intake.